<!DOCTYPE html>
<html class="reftest-wait reftest-print">
<body>
<canvas id="canvas" width="10" height="10"></canvas>
<script>
var canvas = document.getElementById('canvas');
canvas.mozPrintCallback = function(obj) {
  setTimeout(function() {
    var ctx = obj.context;
    ctx.fillStyle = 'rgb(255, 0, 0)';
    ctx.fillRect(0, 0, 10, 10);
    obj.done();
    document.documentElement.classList.toggle("reftest-wait");
  }, 0);
};
</script>
</body>
</html>
